CN109504523A - A kind of regeneration method rolling waste lubricating oil - Google Patents
A kind of regeneration method rolling waste lubricating oil Download PDFInfo
- Publication number
- CN109504523A CN109504523A CN201910001436.5A CN201910001436A CN109504523A CN 109504523 A CN109504523 A CN 109504523A CN 201910001436 A CN201910001436 A CN 201910001436A CN 109504523 A CN109504523 A CN 109504523A
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- China
- Prior art keywords
- lubricating oil
- waste lubricating
- oil
- rolling waste
- regeneration method
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0008—Working-up used lubricants to recover useful products ; Cleaning with the use of adsorbentia
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0016—Working-up used lubricants to recover useful products ; Cleaning with the use of chemical agents
Abstract
The invention discloses a kind of regeneration methods for rolling waste lubricating oil.This method, which mainly comprises the steps that, to be heated rolling waste lubricating oil first and stands removal of impurities, then rolling waste lubricating oil is taken to be heated to 30-80 DEG C, ferric chloride solution is added thereto, a certain amount of sodium hydroxide solution is added immediately, after being stirred continuously 2-10min, it adds flyash to continue to stir 5-15min, finally be centrifuged mixture, the base oil after obtained supernatant is namely regenerated.This method carries out flocculation treatment in advance to rolling waste lubricating oil using inorganic flocculating agent, then waste lubricating oil is rolled using the further absorption regeneration of flyash, the base oil obtained using the method, its physicochemical property and service performance have obtained effective recovery, and this method is simple to operation, clean and environmental protection, while solving the problems such as the taking up a large area of conventional regeneration technique, energy consumption is high, operating cost is high, environmental pollution is serious.
Description
Technical field
The present invention relates to a kind of regeneration methods for rolling waste lubricating oil, belong to petroleum-based energy technical field.
Background technique
Rolling waste lubricating oil is the waste oil replaced in rolling process.In recent years, with the rapid hair of China's industry
Exhibition, trade waste also quickly generate, and rolling waste lubricating oil is exactly one such.Due to the sundries in rolling waste lubricating oil
It is more complicated, it is larger to recycle difficulty, so most of factory carries out after collecting rolling waste lubricating oil directly as fuel
Burning can't help producing great waste using this method processing waste rolling oil, and in the burned of rolling waste lubricating oil
Also a large amount of toxic gas is given off in journey, polluted environment.Therefore it cannot be neglected today in current oil crisis, rolling is useless
The recycling and reusing of lubricating oil has received people and more and more payes attention to.
In rolling waste lubricating oil, impurity therein is mainly the harmful substances such as metallic particles, moisture, pitch, colloid, is accounted for
Overall 15% or so, however 80% or more the ingredient for rolling waste lubricating oil is all base oil.Roll waste lubricant oil regeneration skill
Art is mainly the impurity removed in waste rolling oil, extracts useful base oil, restores its service performance, makes to extract base oil
Physicochemical property reach the standard of fresh oil, and can come into operation.The regeneration technology of rolling waste lubricating oil is predominantly following at present
It is several: the clay-filtered technique of sulfuric acid-, solvent refining processes, hydrofining technology, short-path distillation regeneration technology, supercritical extract
Technique etc..Since China in terms of rolling waste lubricant oil regeneration due to starting late, production scale is smaller etc., waste lubricating oil is rolled
Regeneration technology development is slower, and domestic regeneration techniques rest on sulfuric acid-carclazyte technique more, but the technique disappears in process of production
Consume a large amount of sulfuric acid and carclazyte, great waste of resource, pollution environment.
Summary of the invention
The purpose of the present invention is to solve the deficiencies of the rolling waste lubricant oil regeneration, provide a kind of inorganic flocculation-suction
The method of attached regeneration rolling waste lubricating oil.It is effectively wadded a quilt with cotton in this method by the synergistic effect of sodium hydroxide and ferric hydroxide colloid
The impurity such as the solidifying polarity colloid removed in rolling waste oil, asphalitine, lipid, organic acid, then adding adsorbent can effectively inhale
The solid and partial colloidal impurity of bulky grain in attached rolling waste lubricating oil, while the sedimentation speed of aggregate after flocculation can be improved
Rate improves the rate of recovery of oil product.This method is at low cost, easy to operate, low energy consumption and environmental pollution is small, can be effectively to rolling
Waste lubricating oil processed carries out regeneration, has a good application prospect.
To achieve the above object, the present invention provides a kind of regeneration method for rolling waste lubricating oil, the specific steps are as follows:
(1) rolling waste lubricating oil is heated and stands 2-4 days, pre-processed；
(2) it takes 50-100ml rolling waste lubricating oil to be heated to 30-80 DEG C, 4-10ml ferric chloride solution is added thereto, with
The sodium hydroxide solution of 10-30ml is added, is stirred continuously 2-10min；
(3) 1.0-3.0g flyash is added into the mixture of step (2) to continue to stir 5-30min, finally by mixture
It is centrifuged 5-10min, the base oil after obtained supernatant is namely regenerated.
In above-mentioned steps (1), heating temperature is 30~60 DEG C.
In above-mentioned steps (2), the concentration of ferric chloride solution is 0.1-0.2mol/L.With iron chloride and sodium hydroxide plus
Membership generates cotton-shaped ferric hydroxide colloid in mixed liquor, and can effectively flocculate the impurity removed in waste oil, while hydroxide
The addition of sodium can also go out the lipid of part, the impurity of organic acid.In above-mentioned steps (2), the concentration of sodium hydroxide solution
For 0.8-1.5mol/L.
In above-mentioned steps (2), mixing speed 300-800r/min.
In above-mentioned steps (3), flyash is before use, remove bulk impurity and 200-300 mesh with 50-100 mesh screen respectively
Sieve removes the too small flyash of partial size.The addition of flyash effectively can generate absorption to large granular impurity and colloid and make
With, and the density of adsorbent is relatively bigger, can accelerate the rate of settling of aggregate after flocculation.
In above-mentioned steps (3), mixing speed 300-500r/min.
In above-mentioned steps (3), the centrifugal rotational speed of centrifuge is 500-1500r/min.
A kind of regeneration method of rolling waste lubricating oil of the invention, can effectively remove bulky grain solid in waste oil,
The impurity such as colloid, pitch and oxide.The method that the invention combines inorganic flocculation and Powder ash adsorption, reasonably by waste powder
Coal ash re-uses, and is a kind of environmentally protective, energy-efficient regeneration rolling waste lubricating oil new process.
Compared with existing preparation method, beneficial effects of the present invention are as described below:
1, the method achieve the New Regenerated techniques of anacidity, organic solvent-free.
2, waste material flyash is recycled again, environmentally protective, reclaimed oil performance is close with fresh oil.
3, rolling waste oil is regenerated using inorganic flocculation-adsorption process, it is easy to operate, low energy consumption, expense is low, without dirt
Dye, has a good application prospect.
Detailed description of the invention
Fig. 1 is the comparison diagram of the oil and reclaimed oil after rolling waste lubricating oil, flocculation in embodiment 1.
Fig. 2 is the ultraviolet transmission figure of reclaimed oil in each embodiment.
Fig. 3 is the rate of recovery figure of reclaimed oil in each embodiment.
Specific embodiment
Below by specific embodiment, the invention will be further described, but is not intended to limit the scope of application of the invention.
Embodiment 1
A kind of regeneration method rolling waste lubricating oil, specifically includes the following steps:
(1) rolling waste lubricating oil is heated to 60 DEG C and stands 4 days, pre-processed；
(2) it takes 50ml rolling waste lubricating oil to be heated to 60 DEG C, it is molten that the iron chloride that 6ml concentration is 0.2mol/L is added thereto
Liquid, the concentration that 15ml is added immediately is the sodium hydroxide solution of 1.0mol/L, is stirred continuously 5min under the revolving speed of 500r/min；
(3) flyash is screened respectively with 100 and 250 mesh screens, then mixture enters 2.0g powder in step (2)
Coal ash continues to stir 20min at 500r/min, mixture is finally centrifuged 10min at 1000r/min, obtained supernatant
Base oil after liquid is namely regenerated.
In the present embodiment, waste lubricating oil, the oil after flocculation and reclaimed oil are rolled as shown in Figure 1, reclaimed oil it is ultraviolet
Absorbance is as shown in Fig. 2, shown in rate of recovery Fig. 3 of reclaimed oil, physicochemical property such as 1 institute of table of regenerated oil after flocculation and after absorption
Show, and is denoted as flocculation oil and example 1 respectively.
Embodiment 2
A kind of regeneration method rolling waste lubricating oil, specifically includes the following steps:
(1) rolling waste lubricating oil is heated to 30 DEG C and stands 2 days, pre-processed；
(2) it takes 80ml rolling waste lubricating oil to be heated to 30 DEG C, the iron chloride that 4ml isoconcentration is 0.1mol/L is added thereto
Solution, the concentration that 10ml is added immediately is the sodium hydroxide solution of 0.8mol/L, is stirred continuously under the revolving speed of 300r/min
2min；
(3) flyash is screened respectively with 100 and 300 mesh screens, then mixture enters 1.0g powder in step (2)
Coal ash continues to stir 5min at 300r/min, mixture is finally centrifuged 10min at 1500r/min, obtained supernatant
Base oil after namely regenerated.
In the present embodiment, reclaimed oil ultraviolet absorptivity as shown in Fig. 2, reclaimed oil the rate of recovery as shown in figure 3, regeneration
The physicochemical property of oil afterwards is as shown in table 1.
Table 1 rolls the physicochemical property of waste lubricating oil, reclaimed oil and fresh oil
It is compared by 1 data above of table it can be found that being wanted by the performance of the reclaimed oil after inorganic flocculation-absorption regeneration
Waste lubricating oil is far superior to rolled, and the metallic element in oil substantially completely removes, and reclaimed oil is viscous from appearance, movement
The aspect such as degree, water content has different promotions.It is found from the comparison of embodiment 1 and embodiment 2, when chlorination in flocculation process
When the dosage of iron and Strong oxdiative sodium increases, the physical property of reclaimed oil obtains higher promotion, and the content of metallic element also obtains
It is significant to reduce.Therefore, the basic oil quality that the regeneration method of rolling waste lubricating oil provided by the present invention obtains is preferable.
Embodiment 3
A kind of regeneration method rolling waste lubricating oil, specifically includes the following steps:
(1) rolling waste lubricating oil is heated to 40 DEG C and stands 4 days, pre-processed；
(2) it takes 80ml rolling waste lubricating oil to be heated to 80 DEG C, the chlorination that 10ml isoconcentration is 0.2mol/L is added thereto
Ferrous solution, the concentration that 20ml is added immediately is the sodium hydroxide solution of 1.5mol/L, is stirred continuously under the revolving speed of 800r/min
10min；
(3) flyash is screened respectively with 50 and 200 mesh screens, then mixture enters 3.0g powder in step (2)
Coal ash continues to stir 30min at 400r/min, mixture is finally centrifuged 8min at 800r/min, obtained supernatant
Base oil after namely regenerated.
In the present embodiment, the ultraviolet absorptivity of reclaimed oil is as shown in Fig. 2, the rate of recovery of reclaimed oil is as shown in Figure 3.
Embodiment 4
A kind of regeneration method rolling waste lubricating oil, specifically includes the following steps:
(1) rolling waste lubricating oil is heated to 40 DEG C and stands 4 days, pre-processed；
(2) it takes 50ml rolling waste lubricating oil to be heated to 40 DEG C, the iron chloride that 9ml isoconcentration is 0.2mol/L is added thereto
Solution, the concentration that 20ml is added immediately is the sodium hydroxide solution of 1.5mol/L, is stirred continuously under the revolving speed of 500r/min
8min；
(3) flyash is screened respectively with 100 and 300 mesh screens, then mixture enters 3.0g powder in step (2)
Coal ash continues to stir 30min at 500r/min, mixture is finally centrifuged 10min at 1000r/min, obtained supernatant
Base oil after liquid is namely regenerated.
In the present embodiment, the ultraviolet absorptivity of reclaimed oil is as shown in Fig. 2, the rate of recovery of reclaimed oil is as shown in Figure 3.
From in Fig. 2 it was found that ultraviolet transmission (74.3%) highest of the reclaimed oil in embodiment 4, the row of embodiment 1
It is minimum in the reclaimed oil ultraviolet transmission (73.5%) of second (74.1%), embodiment 2, this is because in example 4,
The dosage of flocculated stage iron chloride and sodium hydroxide is higher, is also highest in the flyash dosage of absorption phase, so causing
The content that well cuts are regenerated in embodiment 4 is minimum, so that its ultraviolet transmission is highest.From Fig. 3 it has also been discovered that,
With the increase of the removal amount of regeneration well cuts, the rate of recovery of reclaimed oil is reduced, so the performance of the reclaimed oil in embodiment 4
It is best.
The above is only the citing of embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the technical principles of the invention, several improvement can also be made, these improvement also should be regarded as this
The protection scope of invention.
Claims (8)
1. a kind of regeneration method for rolling waste lubricating oil, which is characterized in that specific step is as follows:
(1) rolling waste lubricating oil is heated and stands 2-4 days, pre-processed；
(2) take 50-100ml rolling waste lubricating oil be heated to 30-80 DEG C, thereto be added 4-10ml ferric chloride solution, immediately plus
The sodium hydroxide solution for entering 10-30ml, is stirred continuously 2-10min；
(3) 1.0-3.0g flyash is added into the mixture of step (2) to continue to stir 5-30min, is finally centrifuged mixture
5-10min, the base oil after obtained supernatant is namely regenerated.
2. regeneration method as described in claim 1, which is characterized in that in step (1), heating temperature is 30~60 DEG C.
3. regeneration method as described in claim 1, which is characterized in that in step (2), ferric chloride solution it is dense
Degree is 0.1-0.2mol/L.
4. regeneration method as described in claim 1, which is characterized in that in step (2), sodium hydroxide solution
Concentration is 0.8-1.5mol/L.
5. regeneration method as described in claim 1, which is characterized in that in step (2), mixing speed 300-800r/min.
6. regeneration method as described in claim 1, which is characterized in that in step (3), flyash before use, use 50- respectively
100 mesh screens remove bulk impurity and 200-300 mesh screen removes the too small flyash of partial size.
7. regeneration method as described in claim 1, which is characterized in that in step (3), mixing speed 300-500r/min.
8. regeneration method as described in claim 1, which is characterized in that in step (3), the centrifugal rotational speed of centrifuge is 500-
1500r/min。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910001436.5A CN109504523A (en) | 2019-01-02 | 2019-01-02 | A kind of regeneration method rolling waste lubricating oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910001436.5A CN109504523A (en) | 2019-01-02 | 2019-01-02 | A kind of regeneration method rolling waste lubricating oil |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826229A (en) * | 2020-07-31 | 2020-10-27 | 慈溪市四海轴承有限公司 | Super-precision oil cleaning and purifying process and treatment equipment thereof |
| CN113403133A (en) * | 2021-05-27 | 2021-09-17 | 河南焓晨新能源有限公司 | Method for recycling waste lubricating oil |
| CN114317092A (en) * | 2021-12-03 | 2022-04-12 | 上海应用技术大学 | Regeneration method of waste transformer oil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826229A (en) * | 2020-07-31 | 2020-10-27 | 慈溪市四海轴承有限公司 | Super-precision oil cleaning and purifying process and treatment equipment thereof |
| CN111826229B (en) * | 2020-07-31 | 2023-06-02 | 慈溪市四海轴承有限公司 | Clean purification process and treatment equipment for super-essential oil |
| CN113403133A (en) * | 2021-05-27 | 2021-09-17 | 河南焓晨新能源有限公司 | Method for recycling waste lubricating oil |
| CN114317092A (en) * | 2021-12-03 | 2022-04-12 | 上海应用技术大学 | Regeneration method of waste transformer oil |
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Application publication date: 20190322 |